Conventional Multi-Slice Computed Tomography (CT) and Cone-Beam CT (CBCT) for Computer-Aided Implant Placement. Part II: Reliability of Mucosa-Supported Stereolithographic Guides

• Published in: Clinical implant dentistry and related research Vol. 15; no. 6; pp. 907 - 917
• Main Authors: Arisan, Volkan, Karabuda, Zihni Cüneyt, Pişkin, Bülent, Özdemir, Tayfun
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.12.2013
• Subjects: Anodontia - surgery; computed tomography; computer assisted; cone beam; Cone-Beam Computed Tomography - methods; Dental Implants; Dentistry; deviation from the planning; gray density; Humans; Mouth Mucosa; stereolithography; Therapy, Computer-Assisted; Tomography, X-Ray Computed - methods; computed tomography; gray density; computer assisted; stereolithography; deviation from the planning; cone beam; dental implants
• ISSN: 1523-0899; 1708-8208
• DOI: 10.1111/j.1708-8208.2011.00435.x

ABSTRACT Purpose: Deviations of implants that were placed by conventional computed tomography (CT)‐ or cone beam CT (CBCT)‐derived mucosa‐supported stereolithographic (SLA) surgical guides were analyzed in this study. Materials and Methods: Eleven patients were randomly scanned by a multi‐slice CT (CT group) or a CBCT scanner (CBCT group). A total of 108 implants were planned on the software and placed using SLA guides. A new CT or CBCT scan was obtained and merged with the planning data to identify the deviations between the planned and placed implants. Results were analyzed by Mann‐Whitney U test and multiple regressions (p < .05). Results: Mean angular and linear deviations in the CT group were 3.30° (SD 0.36), and 0.75 (SD 0.32) and 0.80 mm (SD 0.35) at the implant shoulder and tip, respectively. In the CBCT group, mean angular and linear deviations were 3.47° (SD 0.37), and 0.81 (SD 0.32) and 0.87 mm (SD 0.32) at the implant shoulder and tip, respectively. No statistically significant differences were detected between the CT and CBCT groups (p = .169 and p = .551, p = .113 for angular and linear deviations, respectively). Conclusions: Implant placement via CT‐ or CBCT‐derived mucosa‐supported SLA guides yielded similar deviation values. Results should be confirmed on alternative CBCT scanners.